Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Basic and Diluted Net Income (Loss) Per Share

The calculations of basic and diluted net income per share are as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions, except per share data)	2022		2021		2022		2021
Net income - basic and diluted	$	852.1	$	3,098.9	$	1,825.6	$	4,214.1
Weighted average shares - basic	107.9		105.0		107.3		105.2
Effect of dilutive securities:
Stock options	4.7		4.8		4.9		4.7
Restricted stock awards and restricted stock units	1.4		1.0		1.4		0.8
Weighted average shares - diluted	114.0		110.8		113.6		110.7
Net income per share - basic	$	7.90	$	29.51	$	17.01	$	40.06
Net income per share - diluted	$	7.47	$	27.97	$	16.07	$	38.07

Antidilutive Securities

Shares which have been excluded from diluted per share amounts because their effect would have been antidilutive include the following:

	Three Months Ended June 30,		Six Months Ended June 30,
(Shares in millions)	2022	2021	2022	2021
Stock options	2.2	5.0	2.3	5.0